From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on archive.lwn.net X-Spam-Level: X-Spam-Status: No, score=-5.7 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by archive.lwn.net (Postfix) with ESMTP id D576E7DCEA for ; Tue, 13 Aug 2019 21:05:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727052AbfHMVEq (ORCPT ); Tue, 13 Aug 2019 17:04:46 -0400 Received: from mga09.intel.com ([134.134.136.24]:18658 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726986AbfHMVDk (ORCPT ); Tue, 13 Aug 2019 17:03:40 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 13 Aug 2019 14:03:39 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,382,1559545200"; d="scan'208";a="194275959" Received: from yyu32-desk1.sc.intel.com ([10.144.153.205]) by fmsmga001.fm.intel.com with ESMTP; 13 Aug 2019 14:03:38 -0700 From: Yu-cheng Yu To: x86@kernel.org, "H. Peter Anvin" , Thomas Gleixner , Ingo Molnar , linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-api@vger.kernel.org, Arnd Bergmann , Andy Lutomirski , Balbir Singh , Borislav Petkov , Cyrill Gorcunov , Dave Hansen , Eugene Syromiatnikov , Florian Weimer , "H.J. Lu" , Jann Horn , Jonathan Corbet , Kees Cook , Mike Kravetz , Nadav Amit , Oleg Nesterov , Pavel Machek , Peter Zijlstra , Randy Dunlap , "Ravi V. Shankar" , Vedvyas Shanbhogue , Dave Martin Cc: Yu-cheng Yu Subject: [PATCH v8 00/14] Control-flow Enforcement: Branch Tracking, PTRACE Date: Tue, 13 Aug 2019 13:53:45 -0700 Message-Id: <20190813205359.12196-1-yu-cheng.yu@intel.com> X-Mailer: git-send-email 2.17.1 Sender: linux-doc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org The previous version of CET Branch Tracking/PTRACE patches is here: https://lkml.org/lkml/2019/6/6/1030 Summary of changes from v7: Change legacy bitmap to a special mapping (patch #14). Rebase to v5.3-rc4. Small fixes in response to comments. H.J. Lu (5): x86/cet/ibt: Add arch_prctl functions for IBT x86/vdso: Insert endbr32/endbr64 to vDSO x86/vdso/32: Add ENDBR32 to __kernel_vsyscall entry point x86/vsyscall/64: Add ENDBR64 to vsyscall entry points x86: Discard .note.gnu.property sections Yu-cheng Yu (9): x86/cet/ibt: Add Kconfig option for user-mode Indirect Branch Tracking x86/cet/ibt: User-mode indirect branch tracking support x86/cet/ibt: Handle signals for end branch mm/mmap: Add IBT bitmap size to address space limit check x86/cet/ibt: ELF header parsing for IBT x86/cet/ibt: Add ENDBR to op-code-map x86/vsyscall/64: Fixup shadow stack and branch tracking for vsyscall x86/cet: Add PTRACE interface for CET Introduce arch_prctl(ARCH_X86_CET_MARK_LEGACY_CODE) arch/x86/Kconfig | 17 ++ arch/x86/Makefile | 7 + arch/x86/entry/vdso/Makefile | 12 +- arch/x86/entry/vdso/vdso-layout.lds.S | 1 + arch/x86/entry/vdso/vdso32/system_call.S | 3 + arch/x86/entry/vsyscall/vsyscall_64.c | 29 +++ arch/x86/entry/vsyscall/vsyscall_emu_64.S | 9 + arch/x86/entry/vsyscall/vsyscall_trace.h | 1 + arch/x86/include/asm/cet.h | 9 + arch/x86/include/asm/disabled-features.h | 8 +- arch/x86/include/asm/fpu/regset.h | 7 +- arch/x86/include/asm/mmu_context.h | 10 + arch/x86/include/asm/processor.h | 13 +- arch/x86/include/uapi/asm/prctl.h | 3 + arch/x86/kernel/Makefile | 2 +- arch/x86/kernel/cet.c | 54 +++++ arch/x86/kernel/cet_bitmap.c | 210 ++++++++++++++++++ arch/x86/kernel/cet_prctl.c | 19 ++ arch/x86/kernel/cpu/common.c | 17 ++ arch/x86/kernel/fpu/regset.c | 41 ++++ arch/x86/kernel/process_64.c | 5 + arch/x86/kernel/ptrace.c | 16 ++ arch/x86/kernel/vmlinux.lds.S | 10 + arch/x86/lib/x86-opcode-map.txt | 13 +- include/uapi/linux/elf.h | 1 + mm/memory.c | 8 + mm/mmap.c | 19 +- .../arch/x86/include/asm/disabled-features.h | 8 +- tools/objtool/arch/x86/lib/x86-opcode-map.txt | 13 +- 29 files changed, 552 insertions(+), 13 deletions(-) create mode 100644 arch/x86/kernel/cet_bitmap.c -- 2.17.1